What checks need to be made to avoid Email Injection?

[spartan7]

Hi there

I have been getting very strange Emails lately and it fits the profile of somebody trying to use my forms for spamming.

I have just added a regular expression that does a full variable check for "MIME-Version"

What is the full list of things I must look out for to prevent Email Injection?

Thanks

[Alexei Kubarev]

mostly you will need a function to generate a unique hard to reproduce finger print that you will be able to regenerate on the page that sends data... that way you will be able to make suire that everything is sent from your page...

for more help i will need more information..